/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package controlador;

import java.io.IOException;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Collection;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.Resource;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import modelo.Categoria;
import javax.sql.DataSource;
import modelo.Usuarios;
import persistencia.CategoriaBean;
import persistencia.UsuarioBean;

/**
 *
 * @author Felipe
 */
@WebServlet(name = "IniServlet", urlPatterns = {"/IniServlet"})
public class IniServlet extends HttpServlet {

    @Resource(name = "jdbc/HOLAJDBC")
    private DataSource ds;

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        Connection conexion = null;
        try {
            
            conexion = ds.getConnection();
             HttpSession session = request.getSession();
            ServletContext contexto = request.getServletContext();
            int rut = 0;
            String strRut;
            String pass;
            pass = request.getParameter("PASS");
            strRut = request.getParameter("RUT_USUARIO");
            if (strRut != null) {
                rut = Integer.parseInt(strRut);
            }
            UsuarioBean usuBean = new UsuarioBean(conexion);
            Usuarios usu = usuBean.validar(rut, pass);
            if (usu != null) {
                session.setAttribute("USUARIO", usu);
                session.removeAttribute("Mensaje");
                CategoriaBean bean = new CategoriaBean(conexion);
                Collection<Categoria> categorias = bean.buscarTodos();
                contexto.setAttribute("Categorias", categorias);
                request.removeAttribute("Mensaje");
                response.sendRedirect("index.jsp");
//                request.getRequestDispatcher("index.jsp").forward(request, response);
            } else {
                request.setAttribute("Mensaje", "usuario o contraseña inválidos");
                request.getRequestDispatcher("login.jsp").forward(request, response);
            }

        } catch (SQLException ex) {
            Logger.getLogger(IniServlet.class.getName()).log(Level.SEVERE,
                    "No se pudo obtener la conexión a la base de datos", ex);
            request.setAttribute("Mensaje", "No se pudo obtener la conexión a la base de datos");
            //response.sendRedirect("login.jsp");
            request.getRequestDispatcher("login.jsp").forward(request, response);
        } finally {
            try {
                conexion.close();
            } catch (Exception noGestionar) {
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
